Test Questions

Question 1

Matter does NOT exist in which form?

Answer 1

energy

Question 2

A(n) _____ is a substance that dissolves another substance to form a solution.

Answer 2

solvent

Question 3

Rubbing alcohol and hair spray are examples of:

Answer 3

volatile alcohols

Question 4

A(n) _____ releases a significant amount of heat.

Answer 4

exothermic reaction

Question 5

Which of the following is NOT a physical mixture?

Answer 5

element

Question 6

Any substance that occupies space and has mass (weight) is considered:

Answer 6

matter

Question 7

The term pH represents the quantity of _____ ions.

Answer 7

hydrogen

Question 8

An oxidizing agent:

Answer 8

releases oxygen

Question 9

Steam is an example of a:

Answer 9

vapor

Question 10

Which of the following is an oily substance used as moisturizer in skin and body creams?

Answer 10

glycerin

Question 11

Sodium hydroxide, commonly known as _____, is a very strong alkali used in chemical hair relaxers, callous softeners, and drain cleaners.

Answer 11

lye

Question 12

Ointments, pastes, and pomades are:

Answer 12

semisolid mixtures

Question 13

In an oxidation-reduction reaction:

Answer 13

oxidation and reduction occur simultaneously

Question 14

There are _____ naturally occurring elements.

Answer 14

98

Question 15

A _____ is a physical combination of matter in any proportions.

Answer 15

physical mixture

Question 16

A reducing agent is a substance that adds _____ to a chemical compound or subtracts oxygen from the compound.

Answer 16

hydrogen

Question 17

Nail polish is an example of a(n):

Answer 17

suspension

Question 18

Which statement about surfactant molecules is correct?

Answer 18

The head is hydrophilic and the tail is lipophilic.

Question 19

A _____ is a substance that allows oil and water to mix, or emulsify.

Answer 19

surfactant

Question 20

The study of substances that contain carbon is called _____ chemistry.

Answer 20

organic

Question 21

An ion with a positive electrical charge is called a(n):

Answer 21

cation

Question 22

A chemical combination of matter in definite (fixed) proportions is called a(n):

Answer 22

pure substance

Question 23

When a substance undergoes a _____ change, a new substance with different properties is created.

Answer 23

chemical

Question 24

Substances lacking the element _____ are classified as inorganic.

Answer 24

carbon

Question 25

An atom or molecule that carries any electrical charge is called a(n):

Answer 25

ion

Question 26

A(n) _____ is an alkaline substance used to neutralize acids or raise the pH of hair products.

Answer 26

alkanolamine

Question 27

A(n) _____ is an unstable physical mixture of undissolved particles in a liquid.

Answer 27

suspension

Question 28

Characteristics of matter that do not involve chemically changing a substance are called _____ properties.

Answer 28

physical

Question 29

A water-in-oil emulsion:

Answer 29

has water droplets emulsified in oil

Question 30

A chemical combination of two or more atoms of different elements in definite proportions is a(n):

Answer 30

compound

Question 31

Protons are subatomic particles with which type of charge?

Answer 31

positive

Question 32

Two or more immiscible substances combine with a special binding ingredient to create a(n):

Answer 32

emulsion

Question 33

Pure water has a pH of:

Answer 33

7

Question 34

Which of the following is a special type of oil used in water-resistant lubricants for the skin?

Answer 34

silicone

Question 35

When stored under ideal conditions, a properly formulated emulsion can be stable for up to:

Answer 35

3 years

Question 36

Only products that contain _____ can have a pH.

Answer 36

water

Question 37

Which of the following, also called a base, is a compound that reacts with acids to form salts?

Answer 37

alkali

Question 38

An elemental molecule is a molecule containing:

Answer 38

two or more atoms of the same element in definite proportions

Question 39

When acids and alkalis are mixed together in equal proportions, they form:

Answer 39

water

Question 40

The _____ is the substance that is dissolved into a solution.

Answer 40

solute

Question 41

A stable physical mixture of two or more substances is a(n):

Answer 41

solution

Question 42

If two liquids are mutually soluble, they are considered:

Answer 42

miscible

Question 43

Which of the following is an example of a chemical property?

Answer 43

ability of wood to burn

Question 44

A(n) _____ is the basic unit of matter.

Answer 44

atom

Question 45

Which of the following is a colorless gas with a pungent odor composed of hydrogen and nitrogen?

Answer 45

ammonia

Question 46

A substance's state of matter depends on its:

Answer 46

temperature

Question 47

The rapid oxidation of a substance, accompanied by the production of heat and light, is called:

Answer 47

combustion

Question 48

The simplest form of chemical matter is a(n):

Answer 48

element

Question 49

Volatile organic compounds contain _____ and evaporate very easily.

Answer 49

carbon

Question 50

A(n) _____ is a chemical combination of two or more atoms in definite (fixed) proportions.

Answer 50

molecule